The term 69 is common knowledge. It refers to male and female engaging in oral sex or spooning even in some books. But the term 89 refers to a man(9) either spooning or getting lost in a pair of big boobs (8)

The most awesome number in the world. When theres a number needed, 89 is the way to go. Everything you ever need is just an 89 away. If you need to use a random number in any situation you MUST use the number 89, its just the best.

"I was just at the mall and there were like 89 people there."
"Did you see that guy, he's like 89 feet tall!"
"omg sif just shot that guy like 89 times, he shoulda been pwnd!!!"
"89"
"8 to the 9"